A General Method for Determining the Functional Role of a Muscle

[+] Author and Article Information
J. G. Andrews

Department of Mechanical Engineering and Department of Exercise Science and Physical Education, The University of Iowa, Iowa City, Iowa 52242

J Biomech Eng 107(4), 348-353 (Nov 01, 1985) (6 pages) doi:10.1115/1.3138568 History: Received July 07, 1984; Revised July 03, 1985; Online June 15, 2009


This paper presents a general classification method for determining the functional role of any muscle, and a procedure for determining the sensitivity of that role to small changes in system parameters. The classification method is based on the premise that the system model, when acted upon solely by the muscle of interest, will depart from any initial rest configuration in such a way as to decrease the muscle’s length. This method is particularly useful for multiple-joint muscles, and is illustrated by examining a slider-crank mechanism and straight line muscle model to determine the functional role of the hamstrings during a constrained leg flexion motion.

Copyright © 1985 by ASME
Topics: Muscle , Mechanisms , Motion
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